Ubetter 12V 35ah Rechargeable Lead Acid Battery pack LiFePO4 lithium battery 26650 18650 32650

• High lifespan: two thousand cycles and more  
• Deep discharge allowed up to 100%
• Ultra safe Lithium ion Phosphate chemistry(no thermal run-way, no fire or explosion risks)
• Embedded BMS(Battery Management system):improve lifespan AND secure the battery
• No Lead, no heavy metal, no toxic element
• Calendar life≥10 years.
• Excellent temperature robustness(-20ºC up to +65ºC)
• Flexible deployment: up to 21packs in parallel and3 in serial 
• Constant power during discharge(very low internal resistance)
• Very low Peukert's losses(energy efficiency≥96%)
• Very low self discharge(<3% per month)
• No memory effect
• About 50% lighter and 40% smaller than equivalent Lead-Acid battery with same usable energy
• Certification: CE, RoHS